Home / 131,729.15-181,786.02-71,299.78

Finding the Fourth Proportional to 131,729.15, 181,786.02 and 71,299.78

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Solution

The fourth proportional to 131,729.15, 181,786.02 and 71,299.78 is: 98,393.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,729.15 : 181,786.02 = 71,299.78 : x
  2. Step 2: Convert to fraction form
    131,729.15/181,786.02 = 71,299.78/x
  3. Step 3: Cross multiply
    131,729.15x = 181,786.02 × 71,299.78
  4. Step 4: Simplify right side
    131,729.15x = 12,961,303,233.08
  5. Step 5: Solve for x
    x = 12,961,303,233.08/131,729.15
  6. Step 6: Final answer
    x = 98,393.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.